Tire load/pressure charts

[fourtrail]

Here is a link to a.pdf file I found on goodyear's website that lists weight ratings at certain tire pressures for diferent tire sizes.

http://www.goodyear.com/truck/pdf/databook/5113_Lsec_V.pdf
for light truck tires

http://www.goodyear.com/truck/pdf/LoadInflPass.pdf
For p-metric tires on light trucks

Hope this helps